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Finding the Fourth Proportional to 87,671.40, 131,409.90 and 48,256.80

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Solution

The fourth proportional to 87,671.40, 131,409.90 and 48,256.80 is: 72,331.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,671.40 : 131,409.90 = 48,256.80 : x
  2. Step 2: Convert to fraction form
    87,671.40/131,409.90 = 48,256.80/x
  3. Step 3: Cross multiply
    87,671.40x = 131,409.90 × 48,256.80
  4. Step 4: Simplify right side
    87,671.40x = 6,341,421,262.32
  5. Step 5: Solve for x
    x = 6,341,421,262.32/87,671.40
  6. Step 6: Final answer
    x = 72,331.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.